Patent GB-191504990-A (GB)
Title: Improvements relating to Apparatus for Creasing, Marking and Cutting Leather Covered and the like Cases, and similar Articles or Blanks.
Inventor: WILLMOTT FRANCIS JAMES
IPC: C14B5/00
Filed: 1915-03-31
Abstract: 4990. Willmott, F. J. March 31. Creasing and the like.-In a machine for creasing, marking, or cutting leather-covered cases, such as spectacle cases or jewel boxes, and similar articles or blanks, the work is held in a carrier which is reciprocated along a bed and also rotated by means actuated by the reciprocating movement, so that the movement of the work relatively to the tool corresponds to the form of the crease or the like to be made. Figs. 1, 3, 5, and 8 show a machine for ornamenting a spectacle case by creases parallel to its edge. The work-carrier comprises a member 36, Fig. 5, the periphery of which is of similar shape to that of the case 1, and work-gripping members 37 connected to the member 36 by pins 38 and slots and slidable toward and from each other to grip and release the work by levers 39 carrying pins engaging cam-slots 43 in the members 37 and connected by a link 41 having an operating-handle 42. The work-carrier is placed on a carriage 8 slidable on a bed 6 by a rack and pinion 11, 10 and handle 9. A shaft 13, Fig. 8, carried by the carriage 8 is provided with an arm 14 carrying a roller 15 engaging a groove 16 in the member 36 and of similar shape to the work. A spring 18 connected to an arm 17 on the shaft 13 causes the roller 15 to press the work-carrier constantly against a guide-rail 5. A wire 3 passes round the workcarrier, to which it is fixed at one point and has its ends 4, 4<a> secured to the ends of the guide 5. The tools 19, 20 heated by gas are adjustably carried by a pair of crossed levers 21, 22, pivoted to the carriage 8 and pressed together by a spring 29. A spring 27 acting on the lever 22 acts to press the case 1 down on to a shoulder 28 of the carrier. Rollers 31 are mounted on the levers 21, 22 so that, when the carriage reaches the ends of its strokes, they engage projecting wedges 32 and open out the tools. In operation, when the straight sides of the work are parallel to the guide 5, the roller 15 moves freely in the straight parts of the slot 16, and the work remains stationary while the tools produce the straight creases. When the roller 15 reaches the curved parts of the slot 16, the work-carrier is rotated, the movement being controlled by the wire 3, and the curved creases are formed. A spring-pressed member 45 assists in the ejection of the finished case, a shield 35 preventing contact of the case with the hot tool. Instead of the wire 3, the carrier may be provided with peripheral teeth engaging a toothed rack on the guide 5. For forming concave creases, the machine shown in Figs. 10 and 12 may be employed. In this machine, the workcarrier 36, adapted to receive a bangle case, is rotated by the roller 47 and wire 57 and engages a resilient guide comprising spring-pressed rollers 50, 52 carried by the travelling carriage 49. The rollers 50 are supported by a frame 51 pressed by a spring 54, and the roller 52 is supported by an independent spring-pressed frame.